The increasing Human Population is putting immense pressure on Resources
A population is a group of individuals of a particular species occupying a particular area at a specific time.
developed countries
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Types of Ecosystems – Terrestrial and Aquatic
Ecosystems can be categorised into two broad categories: natural and artificial. Natural Ecosystems are those ecosystems that operate by themselves under natural conditions. These ecosystems are further categorized as Terrestrial and Aquatic Ecosystems. Terrestrial ecosystems relate to lands, whereas Aquatic ecosystems relate to fresh or marine water. Freshwater ecosystems may be Lotic or Lentic. Lotic are running water ecosystems like springs, streams or rivers, whereas Lentic Fresh Water Ecosystems may be found in standing waters of lakes, ponds, pools, puddles, ditches, swamps, etc. Marine Ecosystems are found in marine waters of salt lakes, seas, oceans and estuaries. Artificial Ecosystems are man-engineered ecosystems like crop fields, artificial ponds and lakes, aquaria, fish ponds, and abandoned mines reclaimed as lakes or water bodies for recreation.
Recycling and Paper Industry
The process of recovering or reusing usable materials from discarded waste is called recycling. For example, about 15 per cent of Sulphuric acid is recycled in chemical manufacturing. In the early days, all the sulphur needed for the production of sulphuric acid was taken out of mines directly. But now, with the prevailing tendencies of recycling, sulphuric acid manufacturing industries are using sulphur from smelters, refineries, etc.
Hunger, Famine, and Nutritional Deficiency Diseases
People who suffer from hunger remain undernourished. They don’t get enough food to eat. As such they don’t get energy, they need to live active lives. Undernourished persons remain unable to study, work or otherwise perform physical and mental activities. This condition is especially hard for women and children. Continuous hunger weakens the immune system and makes them vulnerable to diseases and infections. Mothers who suffer continuous hunger often give birth to underweight and weak babies, and they face increased risk of death.
Study of Environment
Environment may be defined as ‘Complete range of various sets of external conditions comprising- physical, biological, and for human beings- cultural, economic and political conditions; in which human beings and other life forms exist in continuous interactions among themselves.
Amazing World of Animals
The term animal has its origin from the Latin word animalis which means one who has breath. This word is usually applied for the non-human members of the Kingdom Animalia in animal taxonomy. However, the closer relatives of humans like mammals (having mammary glands) have been included in this term.
Types of technology
There are many different types of technologies or technological models- such as Low-tech, Hi-tech, alternative, intermediate, appropriate, blended, hard, and soft technologies.
Impact of Human Population Growth
The gap between the rich and the poor has increased due to population growth. The rich people are exploiting more resources than poor people. Malnutrition is one of the most common effects of these problems. The poorest people in developing countries do not get adequate calories to develop their health properly.
Processes and Characteristics of Life
All those processes that maintain the body of an organism collectively are called as life processes.
Urban Environment Facing lots of Problems …
As per an assessment, about 600 million people inhabited urban areas of the world in the year 1950. But now urban areas have been recorded to be inhabited by about half of the total population.
Control and Coordination in Living Beings
It is now a general opinion that if we see something moving, it is alive.
Some Benefits of Eating Cauliflowers
Cauliflower is a beautiful compact snow ball like vegetable if it is white. It remains surrounded by soft and long foliage.
